Before I begin I would like some advice (lessons learned) from those who have done a subwoofer install for a Titan.

Is there an easy way to access the battery through the firewall?
Would 2 10" subwoofers be overkill?
Did the rattles increase after the subwoofer install? (need to use dynamat)
Which box do you recommend? I will either be using Polk, RF, or Kicker subs and Kicker, Alpine, or RF amp.

Also I also wanted to put a bass tube in my Wife’s Maxima. Anyone have an opinion on the bass tube?

no such thing as overkill =) if i could, i would put half a dozen 15's in the bed. Im a bass head. I too am putting two 10's in my truck. I found a place on ebay that would build a box and cover it in OEM carpet for $130 shipped. I get it next Wednesday or so. So.......I guess I'll let you know next week!

Oh, and yes your rattle will increase. Probably. Really depends on how high powered your subs are. In my old accord I had two 12's that would make the bolts work themselves off of the nuts on all sorts of things.

Cool..let me know about that box. What did you use to take the door panels etc off? How about easy access to the battery? I used to install car audio way back when Fosgate was new so it has been a long while. Any prewire output for an amp on the back of the factory stereo?

no such thing as overkill =) if i could, i would put half a dozen 15's in the bed. Im a bass head. I too am putting two 10's in my truck. I found a place on ebay that would build a box and cover it in OEM carpet for $130 shipped. I get it next Wednesday or so. So.......I guess I'll let you know next week!

Oh, and yes your rattle will increase. Probably. Really depends on how high powered your subs are. In my old accord I had two 12's that would make the bolts work themselves off of the nuts on all sorts of things.

I too am looking for a box for under the rear seat to hold 2 10'' subwoofers. Can you respond with the site or dealer on e-bay. I've gone to 3 different car audio places and they've quoted me $250-$350 for a custom build box for 2 10's.

Hemietr, i was in th same posistion. no way was i going to spend 350 for a plain mdf sealed box. the box i bought from ebay is probably the same thing any local shop would build but they were willing to do it ALOT cheaper and they offered OEM carpet for a good price. just go to ebay and type in "titan sub box" i'll look and post a link in few minutes for you.

and mikepsyched, im sorry, im actually not running the wire myself. i used to on all my previous cars, but this is my first brand new truck and id rather pay a little and have a shop take things apart. that way if its broken, its on them not me. all im going to do is wire up and mount the subs in the box and let them do the rest.

hemietr - i've always used fosgate. always. i love them. but honestly, nowadays i've heard jl is better. but i still stuck to fosgate. I got some killer stuff real cheap on ebay. check out the HX2 subs. thats what i got. i would have gotten the newer ones but the mounting depth was too much. these will fit easier. and the amps have always been mazing. they always underrate their amps and are one of the few amps that can really hold a 1 ohm load. (in my experiance) my amps rated at 1000 watss rms at 2 ohms. i will be running it at 1 ohm so i'll be pushing a lot of power. the older fosgate amps could handle it fine, so hopefully this newer one will too.

as for the flows, performance wise, i didnt see much change. but @ 305/379 i dont know if i would really be able to tell much anyway. i mostly just wanted the sound. and it sounds GREAT. and i have both tips coming out on one side, sport style on the passenger side. so its not too noisy to me.

hemietr - i've always used fosgate. always. i love them. but honestly, nowadays i've heard jl is better. but i still stuck to fosgate. I got some killer stuff real cheap on ebay. check out the HX2 subs. thats what i got. i would have gotten the newer ones but the mounting depth was too much. these will fit easier. and the amps have always been mazing. they always underrate their amps and are one of the few amps that can really hold a 1 ohm load. (in my experiance) my amps rated at 1000 watss rms at 2 ohms. i will be running it at 1 ohm so i'll be pushing a lot of power. the older fosgate amps could handle it fine, so hopefully this newer one will too.

as for the flows, performance wise, i didnt see much change. but @ 305/379 i dont know if i would really be able to tell much anyway. i mostly just wanted the sound. and it sounds GREAT. and i have both tips coming out on one side, sport style on the passenger side. so its not too noisy to me.

You will get rattles..Our trucks like to rattle it's a very plasticky truck. You should dynomat without a doubt, it will really help out but not cure rattles. It of course depends on what kind of system you want to install. If your looking for high quality mind blowing sound then yes you will get lot's of rattles.

i've never had a sealed box before. i heard that a down firing box gives you more of an ambient bass while a up firing is more directional. untrue? this box is really only temporary. as soon as i can afford it, i plan to have a fiberglass box custum built.